An expert witness and a fellow physician raised triable issues of fact regarding whether a gastroenterologist departed from the standard of care when he catheterized a patient with an inflamed bile duct, a state appeals court ruled Tuesday.

An Appellate Division, First Department, panel found that despite Dr. Louis May providing experts who said that the plaintiff’s bile duct perforation occurred before his actions, triable issues of fact were raised “as to whether Dr. May caused the … perforation when he conducted the ERCP [endoscopic retrograde cholangiopancreatography] or exacerbated decedent’s injuries by advancing the catheter and performing excessive manipulation.”